Prevent GD vs Phaze
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prevent GD
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The Prevent GameDay mobile app pairs with the Prevent Biometrics impact monitor mouthguard. The Prevent system provides near real-time, accurate head impact data to help teams make the right call about player safety. The Prevent GameDay app is designed for sideline monitoring of head acceleration events. Introduce actionable, objective data into the process of identifying athletes needing sideline evaluation. The Prevent GameDay app provides live alerts of high magnitude head impacts. This app requires at least one Prevent Impact Monitor Mouthguard to operate. Learn more at preventbiometrics.com or contact sales@preventbiometrics.com.
Phaze
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Unlock Peak Performance While Travelling with Phaze Phaze is your ultimate travel performance coach, designed to help you stay at your best, no matter where in the world you go. Created by leading chronobiologists and sleep experts, Phaze optimises your schedule, minimises jet lag, and ensures you’re mentally and physically prepared for the moments that matter. Key Features: - Personalised Activity Schedule - Phaze customises your daily itinerary based on your physiology and travel needs. By aligning your schedule with your body’s circadian rhythms, it optimises when to sleep, eat, and engage in activities- so you feel and perform your best in your new destination. - Jet Lag Management - Beat jet lag with science-backed strategies. Phaze’s proprietary algorithm, developed by chronobiologists, helps reset your internal clock. With an integrated light scanner, it guides your light exposure to accelerate your body’s adjustment, reducing fatigue and enhancing recovery. - Performance Planning - Have a big event, business meeting, or competition while travelling? Enter key dates, and Phaze will create a customised plan to ensure you’re at peak performance exactly when you need to be- whether it’s a presentation, race, or once-in-a-lifetime sightseeing experience. - User-Friendly Interface - Navigate your personalised schedule with ease. Make real-time adjustments, set reminders for crucial activities, and stay on top of your travel itinerary - all in one intuitive app. - Expert Travel Insights - Access science-backed tips on optimising energy levels, hydration, and recovery, so you can make the most of every trip. - Global Time Zone Support - Seamlessly manage your schedule across multiple time zones, ensuring you’re always prepared, no matter where you land. Download Phaze today and travel smarter. Minimise jet lag, maximise performance, and arrive ready to take on the world! This app integrates with Apple HealthKit.
Screenshots
Verdict
Prevent GD and Phaze are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Prevent GD ships an update every 2 months, Phaze every 6 weeks. The most recent releases landed on September 28, 2026 and September 25, 2026 respectively.
| Parameter | Prevent GD | Phaze |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.2 — better |
| Further details — not scored | ||
| Size | 6 MB | 60 MB |
| Age rating | 4+ | 17+ |
| Developer | Prevent Biometrics, Inc | Phaze Shift Ltd |
In-app purchases
Prevent GD
No in-app purchases
Phaze
No in-app purchases









